Hi, On 11/25/2016 12:07 AM, Fabio Estevam wrote: > Hi Laurent, > > On Thu, Nov 24, 2016 at 7:16 PM, Laurent Pinchart > <laurent.pinchart at ideasonboard.com> wrote: >> Hi Andy, >> >> As the author of the DW-HDMI DT bindings this question is addressed to you, >> but information from anyone is more than welcome. >> >> The DT bindings specify two clocks named "iahb" and "isfr" but don't describe >> them. While I assume that the "isfr" clock corresponds to the "isfrclk" input >> signal of the DW HDMI, there is no "iahb" clock described in the IP core >> datasheet. > > i.MX6Q has a DW-HDMI IP block. > > The names in the devicetree binding matches the ones listed at the > i.MX6Q Reference Manual - Table 33-1. HDMI Clocks
correct, for your convenience the table is copied below: Clock name | Clock Root | Description -----------+--------------------+--------------------------------------- iahbclk | ahb_clk_root | Bus clock icecclk | ckil_sync_clk_root | CEC low-frequency clock (32kHZ) ihclk | ahb_clk_root | Module clock isfrclk | video_27m_clk_root | Internal SFR clock (video clock 27MHz) Here AHB stands for ARM Advanced High-performance Bus. By the way while we're discussing DW HDMI bindings specific to iMX, I would recommend to remove utterly hackish and iMX only "gpr" property from the example in bindings/display/bridge/dw_hdmi.txt -- With best wishes, Vladimir
